I'm in a cramped spot and even if I could fit monitors, I wouldn't get them at the ideal angle and height for optimal mixing. So anyone have tips for best headphones for tracking and mixing that won't cost me more than 300 bucks?
I would suggest the audio-technica ATH-M40fs headphones, which was their top of the line in 2008. They have a very flat frequency response with absolutely no bass boost or coloration. They're relatively inexpensive as well, since the company is now pushing their new line of ATH-M50's, and the M40's would well serve your particular needs.
It’s still in the very early stages, but I’ve been working on a site that finds the best headphones for each particular use, and am currently focusing on headphones for studio mixing. As I say, it’s still very new, so the results aren’t perfect, but feel free to check it out.